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Parkinson's disease ( PD ), or simply Parkinson's, is a chronic degenerative disorder of the central nervous system that affects both the motor system and non-motor systems. The symptoms usually emerge slowly, and as the disease progresses, non-motor symptoms become more common. Early symptoms are tremor, rigidity, slowness of movement, and ...
- Age over 60
Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia (slowed movements), rigidity, and postural instability. [1] [2] Both hypokinetic (bradykinesia and akinesia) as well as hyperkinetic (cogwheel rigidity and tremors at rest) features are displayed by Parkinsonism. [3] These are the four motor symptoms found in Parkinson's ...
The law of triviality is C. Northcote Parkinson's 1957 argument that people within an organization commonly give disproportionate weight to trivial issues. Parkinson provides the example of a fictional committee whose job was to approve the plans for a nuclear power plant spending the majority of its time on discussions about relatively minor but easy-to-grasp issues, such as what materials to ...
Schizophrenia is a mental disorder[17] characterized by reoccurring episodes of psychosis that are correlated with a general misperception of reality.[7] Other common signs include hallucinations (typically hearing voices), delusions (i.e., paranoia), disorganized thinking,[10] social withdrawal, and flat affect.[7] Symptoms develop gradually ...
- Environmental and genetic factors
- Ages 16 to 30
- ~17,000 (2015)
- Antipsychotics
Huntington's disease (HD), also known as Huntington's chorea, is an incurable neurodegenerative disease[7] that is mostly inherited.[8] The earliest symptoms are often subtle problems with mood or mental/psychiatric abilities.[9][1] A general lack of coordination and an unsteady gait often follow.[2] It is also a basal ganglia disease causing ...
- Huntington's chorea
- Neurology
- Problems with motor skills, including coordination and gait, mood, and mental abilities
Multiple sclerosis ( MS) is an autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. [3] This damage disrupts the ability of parts of the nervous system to transmit signals, resulting in a range of signs and symptoms, including physical, mental, and sometimes psychiatric problems.
Down syndrome or Down's syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21. [3] It is usually associated with developmental delays, mild to moderate intellectual disability, and characteristic physical features. [1] [12] There are three types of Down syndrome, all ...
